公开(公告)号：US11350320B2

公开(公告)日：2022-05-31

申请号：US16988786

申请日：2020-08-10

Applicant: Nokia Solutions and Networks Oy

Inventor： Srinivasan Selvaganapathy ,  Krzysztof Kordybach ,  Ahmad Awada ,  Jedrzej Stanczak ,  Subramanya Chandrashekar ,  Ingo Viering

IPC: H04W36/00 ,  H04W36/08

Abstract: According to an example aspect of the present invention, there is provided a method comprising, determining, by a source base station, a first target cell and a second target cell for a handover of a user equipment, wherein the first target cell and the second target cell are cells of the same target base station, setting, by the source base station, an identifier of a first handover preparation procedure and an identifier of a second handover preparation procedure, wherein the identifier of the first handover preparation procedure is different compared to the identifier of the second handover preparation procedure, initializing, by the source base station, the first handover preparation procedure to the first target cell and the second handover preparation procedure to the second target cell and binding, by the source base station, the identifier of the first handover preparation procedure and the identifier of the second handover preparation procedure.

公开(公告)号：US20190200320A1

公开(公告)日：2019-06-27

申请号：US16325380

申请日：2017-05-30

Applicant: NOKIA SOLUTIONS AND NETWORKS OY

Inventor： Srinivasan Selvaganapathy ,  Juergen Hofmann ,  Sathiaseelan Sundaralingam ,  Muneender Chiranji ,  Hartmut Wilhelm

IPC: H04W64/00 ,  H04W56/00 ,  H04W24/10 ,  H04W68/00 ,  H04W74/08

CPC classification number: H04W64/003 ,  H04W24/10 ,  H04W56/001 ,  H04W56/005 ,  H04W64/00 ,  H04W68/005 ,  H04W74/0833

Abstract: A technique is provided for receiving, by a user device from a serving base station, a list of base stations including base station identities and/or respective information about their physical channels used for broadcast signaling for which a timing advance measurement is being requested, receiving, by the user device, a positioning reference identifier associated with a timing advance measurement procedure with respect to the user device and one or more base stations identified in the list, and sending, by the user device to one or more of the base stations identified in the list, an uplink signal including a synchronization sequence and the positioning reference identifier.

公开(公告)号：US20180352488A1

公开(公告)日：2018-12-06

申请号：US15573816

申请日：2016-05-10

Applicant: Nokia Solutions and Networks Oy

Inventor： Srinivasan Selvaganapathy ,  Tsunehiko Chiba ,  Tero Henttonen ,  Yang Liu

IPC: H04W36/04 ,  H04W76/15 ,  H04W76/27 ,  H04W48/16 ,  H04W36/28

Abstract: An apparatus comprising at least one processing circuitry, and at least one memory for storing instructions to be executed by the processing circuitry, wherein the at least one memory and the instructions are configured to, with the at least one processing circuitry, cause the apparatus at least: to prepare configuration information regarding cell reselection in a communication network for at least one communication element capable of communicating in a multi-connectivity communication mode, wherein the configuration information comprises at least one preservation scope indication related to at least one cell reselection priority indication which indicates that priority is to be assigned to a first type of cells of the communication network for cell reselection, compared to other types of cells of the communication network, wherein the at least one preservation scope indication indicates at least one cell across which the at least one cell reselection priority indication is to be maintained, and to provide the configuration information for configuring the at least one communication element capable of communicating in the multi-connectivity communication mode.

公开(公告)号：US20170164281A1

公开(公告)日：2017-06-08

申请号：US15324050

申请日：2014-07-07

Applicant: Nokia Solutions and Networks Oy

Inventor： Tsunehiko Chiba ,  Srinivasan Selvaganapathy ,  Woonhee Hwang

IPC: H04W52/02 ,  H04L5/00 ,  H04W72/04 ,  H04W76/02

Abstract: A method of carrying out dual connectivity with a secondary access node and an apparatus is provided. A mode of operation of a user equipment is determined in dependence on the presence of bearers mapped to the secondary access node. Operating in a first mode occurs when it is determined that one or more bearers are mapped to a secondary access node. Operation in a second mode occurs when it is determined that no bearers are mapped to the secondary no access node. The second mode comprises limiting a listening time to a downlink channel from the secondary access node with respect to the first mode.

公开(公告)号：US20190215734A1

公开(公告)日：2019-07-11

申请号：US16307762

申请日：2017-06-06

Applicant: NOKIA SOLUTIONS AND NETWORKS OY

Inventor： Srinivasan Selvaganapathy

IPC: H04W36/00 ,  H04W36/30 ,  H04W4/80

CPC classification number: H04W36/0022 ,  H04W4/80 ,  H04W36/0069 ,  H04W36/30

Abstract: There is provided a method comprising: determining that at least one channel condition of a first carrier is below a threshold, the first carrier operating as a first primary carrier and having a first bandwidth; in response to the determining, determining to use a second carrier as a second primary carrier, which second carrier is determined to provide better coverage than the first carrier, wherein the second carrier comprises a narrowband single resource block co-located within the first bandwidth; and receiving a control channel using the second carrier.

公开(公告)号：US10182377B2

公开(公告)日：2019-01-15

申请号：US15547153

申请日：2016-01-27

Applicant: Nokia Solutions and Networks Oy

Inventor： Tsunehiko Chiba ,  Srinivasan Selvaganapathy ,  Yang Liu

IPC: H04W76/15 ,  H04W36/08 ,  H04W92/20 ,  H04W36/00

Abstract: A method comprising: receiving at a source serving node (505) an identifier associated with a group of random access channel preambles for allocation by the source serving node (505), the group of random access channel preambles having been reserved at a serving node (503) from available random access channel preambles for the serving node (503); allocating at least one from the group of random access channel preambles, in response to determining a handover from the source serving node (505) to a target serving node (507); and transmitting (515) a message to the target serving node (507), the message comprising the at least one from the group of random access channel preambles.

公开(公告)号：US20180242395A1

公开(公告)日：2018-08-23

申请号：US15751347

申请日：2016-07-22

Applicant: Nokia Solutions and Networks Oy

Inventor： Srinivasan Selvaganapathy ,  Seppo Vesterinen ,  Xiang Xu ,  Tsunehiko Chiba

IPC: H04W88/16 ,  H04W48/20 ,  H04W76/12 ,  H04W76/22 ,  H04W88/10 ,  H04W88/12 ,  H04W88/18

CPC classification number: H04W88/16 ,  H04W48/20 ,  H04W76/12 ,  H04W76/22 ,  H04W88/08 ,  H04W88/10 ,  H04W88/12 ,  H04W88/14 ,  H04W88/182

Abstract: There is provided a method comprising receiving information, at a node of a core network, said information comprising an indication of a first local gateway suitable for providing connectivity to a user equipment, wherein the first local gateway is collocated with a first secondary access point, receiving a request from the user equipment for a packet data network connection, upon the request, using said information to select the first local gateway for providing connectivity to the user equipment and providing an indication of the first local gateway to a master access point.

公开(公告)号：US20180014231A1

公开(公告)日：2018-01-11

申请号：US15547153

申请日：2016-01-27

Applicant: Nokia Solutions and Networks Oy

Inventor： Tsunehiko Chiba ,  Srinivasan Selvaganapathy ,  Yang Liu

IPC: H04W36/00 ,  H04W36/08 ,  H04W76/02 ,  H04W92/20

CPC classification number: H04W36/0077 ,  H04W36/0069 ,  H04W36/08 ,  H04W74/006 ,  H04W76/15 ,  H04W92/20

Abstract: A method comprising: receiving at a source serving node (505) an identifier associated with a group of random access channel preambles for allocation by the source serving node (505), the group of random access channel preambles having been reserved at a serving node (503) from available random access channel preambles for the serving node (503); allocating at least one from the group of random access channel preambles, in response to determining a handover from the source serving node (505) to a target serving node (507); and transmitting (515) a message to the target serving node (507), the message comprising the at least one from the group of random access channel preambles.

公开(公告)号：US09813902B2

公开(公告)日：2017-11-07

申请号：US14358855

申请日：2012-10-18

Applicant: Nokia Solutions and Networks Oy

Inventor： Hanns Juergen Schwarzbauer ,  Alexander Vesely ,  Richard Waldhauser ,  Johanna Katariina Pekonen ,  Srinivasan Selvaganapathy

IPC: H04W8/26 ,  H04W36/00

CPC classification number: H04W8/26 ,  H04W36/0055

Abstract: A method including maintaining a database of unique radio network identifiers within a home node B gateway, wherein the unique radio network identifier uniquely identifies the radio network termination point of user equipment attached to a radio node controlled by the home node B gateway.

公开(公告)号：US20170318503A1

公开(公告)日：2017-11-02

申请号：US15522716

申请日：2014-11-06

Applicant: Nokia Solutions and Networks Oy

Inventor： Tsunehiko Chiba ,  Srinivasan Selvaganapathy

IPC: H04W36/00 ,  H04W24/02 ,  H04W36/32 ,  H04W84/18

CPC classification number: H04W36/0027 ,  H04W24/02 ,  H04W36/00 ,  H04W36/0069 ,  H04W36/32 ,  H04W84/18

Abstract: Methods and apparatuses for controlling dual connectivity in a communication system are disclosed. Information on at least one failure in relation to a cell change of a communication device connected to a master access point and a secondary access point is determined. The determined information is communicated to the secondary access point. The secondary access point uses the information in mobility control.